New Build Mortgages: Fast AIP & Offer Timing. New Build Experts.

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Summary

Secure the Best New Build Mortgage Deal Today

Buying a new build home is exciting, but mortgages for new builds can be more complex than for older properties. Lenders often have stricter criteria, lower loan-to-value limits, and tight deadlines linked to developer contracts. We help you secure the right deal, explain the rules clearly, and guide you through the process from reservation to completion. CeMAP-qualified, FCA-regulated advisers. Rated 5★ with 2,500+ Trustpilot reviews and 5/5 on Google. UK-wide support.

What you’ll get (quick overview)

Independent advice across high street and specialist lenders.
Explanation of loan-to-value rules for new builds, including flats and houses.
Guidance on Help to Buy, First Homes, Shared Ownership and other schemes.
Support with tight developer deadlines and mortgage offer validity periods.
Clear overview of costs including deposit, monthly payments, fees and incentives.
Help navigating mortgage extensions if build completion is delayed.

How it works

We start by assessing your income, deposit and eligibility. We check lender criteria for new builds, which are often stricter than for older homes. We then compare deals across the market, showing total costs and options. We guide you through the application process, coordinate with solicitors and developers, and ensure your mortgage is valid until the property is ready to move into.

Key criteria

Minimum 5 to 10 percent deposit for new build houses and 15 to 20 percent for new build flats.
Stable and provable income.
Property must meet lender standards for construction and warranty.
Clean or manageable credit history.
Ability to complete within the developer’s deadline.

Typical documents

Photo ID and proof of address.
Proof of deposit and source of funds.
Last three to six months of payslips or self-employed accounts.
Bank statements covering three to six months.
Reservation form or developer paperwork.
Mortgage Agreement in Principle if already arranged.

Timings

Decision in Principle normally within 24 to 48 hours.
Full mortgage application and offer within 2 to 4 weeks.
Mortgage offers usually valid for 3 to 6 months, with some lenders offering extensions.

When to speak to an adviser

  • You are buying a new build property and want to secure the best deal.
  • You have a small deposit or are using a government scheme.
  • You are worried about deadlines or build delays.
  • You were declined by a lender due to stricter new build rules.
  • You want support from reservation through to completion.
  • Trust and transparency

CeMAP-qualified advisers.
FCA-regulated.
UK-wide support.
Rated 5★ with 2,500+ Trustpilot reviews and 5/5 on Google.

Your home may be repossessed if you do not keep up repayments on your mortgage.

New-Build Mortgages: What you need to know in 60 seconds

Buying a new-build? The Mortgage Broker specialise in the time critical, incentive sensitive nature of new build purchases. We line up your Mortgage in Principle fast, can handle the 28 day exchange pressure, navigate builder incentives and valuer treatment whilst matching you to lenders who offer longer offer validity for new builds. With market wide access to 130+ lenders, we build a mortgage that’s suitable, sustainable and affordable for your exact plot, timeline and budget.

Why The Mortgage Broker for New Build Mortgages? 

  • Low-deposit routes: We assess 95% LTV options via the UK’s permanent Mortgage Guarantee Scheme and builder-backed Deposit Unlock where eligible. We explain trade-offs clearly so you’re not surprised later.
  • Offer timing & extensions: We plan your full application so the mortgage offer covers the build windownd help manage extensions if a developer runs over.
  • Incentives & valuation: We disclose and structure builder incentives correctly to avoid down-valuation surprises and lending shortfalls.
  • New home protection: We check your 10-year warranty acceptance (e.g., NHBC/LABC/Premier) so lenders stay onboard to completion.

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The Mortgage Broker will get you a fast Mortgage in Principle finding you the best rate, clear document & snagging checklists and a lender short list aligned to your plot, incentives, deposit and completion date. All handled by a team that lives and breathes new builds every day.

 

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New Build Mortgage FAQ’s

Answers reviewed by a CeMAP qualified adviser. The Mortgage Broker New Build Mortgages.


Start early and get a Mortgage in Principle before you reserve a plot. Submit your full application once you have the reservation form, confirmed incentives and an estimated completion date. We will time your offer so it comfortably covers the build window and avoids expiring mid-construction.

For houses, up to 95% LTV can be possible; for flats, many lenders cap lower (often 85–90% LTV). Bigger deposits usually mean broader choice and keener pricing. We can show you the breakpoints that materially improve your deal.

Tell us immediately. Lenders must reassess for material changes (job move, reduced income, new credit). Outcomes range from simple re-underwriting or product switch to a revised loan or, in some cases, a decline. We will triage quickly and re-run affordability and advise the least disruptive fix.

Yes, most flats (and some houses on estates) have service/estate charges; some leases also include ground rent. Lenders factor these into affordability and can decline if terms are onerous. We’ll obtain the lease/management pack early so there are no surprises.

There is not a specifically best lender, as criteria varies depending on your circumstances and the property. We shortlist lenders that match your plot type, LTV, incentive structure and build timescale (e.g., longer offer validity, flexible extensions, stronger appetite for flats). After a quick fact find we will give you a named shortlist with pros and cons. Of course, our aim to get you the best rate possible. The Mortgage Broker work for you, not any lender.

We can get you a mortgage in principle with just ID and some info on your income. For full application we require:

  • Photo ID
  • Proof of address
  • 3 months’ payslips (or SA302s/tax year overviews and accounts if self-employed)
  • Last 3 months’ bank statements
  • Details of deposit source (gift letter if gifted, plus ID for the donor)
  • Reservation form, incentive list and your solicitor’s details.

The mortgage is pretty much the same, just with much tighter rules and faster timelines. Expect 28 day exchange targets, capped incentives, specific LTV limits (especially on flats) and mortgage offers that must outlast the build. The process is more time critical and paperwork heavy, but you mortgage broker will manage that for you.

Often yes. Routes include selected 95% LTV products and schemes like Deposit Unlock, Own New Scheme or the Government backed Mortgage Guarantee Scheme (criteria apply). We will confirm eligibility and the total cost vs alternatives.

Typically a property built/converted within the last two years that hasn’t been occupied or previously sold. Some lenders accept recently completed homes that were developer owned or rented but definitions vary, so we check before you reserve.

Yes. Most lenders allow incentives up to a set limit (commonly around 5%). Anything above that can reduce the price they lend against. All incentives must be disclosed on the application and we will structure them correctly to avoid down valuation issues.

Read more about the Own New Scheme here. 


Yes, very standard. That’s why it is important to line up your Mortgage in Principle, your solicitor, documentations and valuation quickly.  Miss the deadline and you could lose your reservation fee!

We will keep the timeline tight and transparent.


Many mortgage offers last 6 months, with some lenders offering longer terms or extensions. We plan the application date around the developer’s schedule and secure an extension if needed, so you’re not forced to re-apply at the 11th hour.

A long stop date is the contractual latest completion date. If the developer misses it, you may be able to walk away and recover your deposit. We always aim to push for a realistic long stop aligned to your mortgage offer window before you exchange.

Yes absolutely, and make sure you commission a snagging inspection. It is separate from the lender’s valuation and lists defects the builder must fix. New doesn’t mean flawless and often there are issues, so snagging protects you.

It can be and it happens. Surveyors value at market level and may exclude excessive incentives. If valuation comes in short, you will need a bigger deposit or we will renegotiate pricing/incentives with the developer. We try to pre-empt this risk at Mortgage in Principle stage as best we can.

Family gifts are usually fine with a proper gift letter and AML checks. Builder “deposit paid” offers are treated as incentives and count toward the cap.

We will ask for evidence and have to document everything correctly for the lender and solicitor.


A recognised 10-year structural warranty (e.g., NHBC, LABC, Premier Guarantee) or equivalent. Without an approved warranty, many lenders will not proceed. We confirm acceptability up front.

Often there can be as some lenders offer rate discounts or cashback for EPC A/B homes. We will check if a green product genuinely lowers your total cost vs a standard deal.

Usually, yes you do, unless your agreement has a cooling-off period or a specified refund policy. Read the reservation terms before you pay. We can help highlight any clawback or admin deductions.

Possibly. Porting is subject to full underwriting and timing rules; ERCs and offer windows matter. We will run the numbers against a fresh deal and advise what is cheapest and most reliable for your build timeline.

Important Reminders:

  • Your home may be repossessed if you do not keep up repayments on your mortgage
  • Avoid new credit, changing jobs, or large spending without checking with us first; lenders re-underwrite material changes.

New Build Mortgage’s made simple!

At a time of higher mortgage rates, and a fluctuating housing market, it is very important to speak to a New Build Mortgage Broker to discuss your options if you are considering buying a new build property. There are plenty of options, specialist schemes and new build mortgage lenders that offer excellent opportunities to get the most cost-effective mortgage on a new build property.

Mortgages for new build properties are not always simple and straightforward, as there may be extra considerations that a lender may consider. Therefore it is important to research and consider all the market options, and search for the best scheme or mortgage rate – as a simple new build mortgage calculator, will not identify the options that may be available to you. Whether a first time buyer or moving home, our new build mortgage brokers will support you through the entire process; ensuring your circumstances are presented correctly, getting you the best mortgage for new build properties.

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Mortgage Affordability Calculator

By entering a few details, you can use this New Build Mortgage Calculator, to search through a pool of over 50 lenders to find an estimate of your mortgage affordability. You will then have access to a mortgage passport, which you can download as proof to demonstrate your affordability. No credit check is required to use this calculator.

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What Is a New Build Mortgage?

Although the definition may vary slightly with different lenders, new build mortgages are usually for new homes that haven’t been lived in and have been built within the last two years.

A new build mortgage may also be for a property that is still under construction, commonly known as an off plan mortgage.

There are pros and cons to new build mortgages and off plan mortgages, which we will cover here so that you have all the information you need to make the decisions that are best for you and your home purchase needs.

Is it hard to get a mortgage for a new build home?

It’s not particularly hard to get a new build mortgage. There are slightly fewer options available, but still plenty of choice. In terms of the process, it’s very similar to any other type of mortgage.

Sometimes the timescales can differ due to the property not being built yet. Some lenders will have an extended offer period for new build property – so instead of your offer lasting the standard six months, some lenders extend it to 12 months to allow for that.

As with a lot of mortgages, it comes down to criteria. There are many factors that can dictate the products available to any client. But for a standard client there will be very competitive deals out there for a new build mortgage.

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What Are the Advantages of New Build Mortgages?

When you purchase a modern, newly built house, there are several benefits for a homeowner, such as;

No renovations needed

A common (and costly) issue when buying an older house, which has been lived in, is that the decor, bathroom, kitchen, carpets, wallpaper etc may not be to your liking and one of the first things you would want to do is make changes which could quickly become expensive.

With a new build, this shouldn’t be a problem because all of these things will be brand new and not in need of repair or renovation. You should just be able to move in and start enjoying your new home without making any substantial changes.

Energy efficiency

As newly built houses have to meet modern building regulations, they are generally more energy efficient than older houses. This means that your energy bills should be lower.

No chain

Because your newly built home hasn’t been lived in, there is no seller chain causing potential delays. This is one less thing to worry about when buying a property.

Modern design

New builds are more likely to be built with a modern lifestyle in mind. This means that rooms can be open plan, with a better flow to them, and even with smart home technology. If you are buying ‘off plan’ then you may even have the opportunity to make choices regarding the layout, fixtures and fittings of your new home.

New home warranty

Newly built properties come with a warranty which can offer peace of mind regarding any issues you may find in your home after you move in. Warranties will usually last for 10 years but it is important to know what is (and isn’t) covered.

Government schemes

There are various government schemes to help especially first time buyers to get on the property ladder. Consulting a new build mortgage advisor can help you discover what is appropriate and available for you.

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Do New Build Mortgages Have Any Disadvantages?

Buying a newly built property comes with pros and cons. Here are some things to take into account when you’re considering a new build or off plan mortgage;

Lower quality

As new homes are generally built to a tight budget and timescales, this may mean a lower standard of build with a variety of potential issues. Problems could be large, such as structural issues, or small ‘snagging’ problems, such as doors catching on new carpets. It’s a good idea to get a professional snagging survey done as soon as possible in order to discover and rectify these issues.

Less space

Property developers will often try to put as many new homes as they can on a site in order to maximise profits. This can mean smaller rooms and gardens and closer proximity to neighbours.

Be sure to check that your car will fit in the garage and that there is enough space for your furniture. Be aware that show homes may have optimised the space when displaying furniture, or even use smaller than standard furniture to give the illusion of a larger room

Possible delays

New builds can sometimes mean delays when construction doesn’t go to plan. Especially when buying an off plan property, delays can cause frustration and expense for the buyer. If the delay is very long then it can even affect your mortgage offer and you may need to reapply.

Ongoing construction

If the site isn’t finished when you move in, there may be building work going on outside your new house for several weeks or months.

Getting a Mortgage for a New Build

The process for new build mortgages is similar to when applying for a standard mortgage, but with some slight differences:

Fewer options

You may find you have fewer options but a new build mortgage broker will be able to help you find lenders who are happy to make a mortgage offer with favourable new build mortgage rates.

Different timescales

As the property you’re buying may still be under construction, the standard 6-months mortgage offer may not be sufficient. Some lenders will take this into account and extend their offer to 12 months. Again, a new build mortgage broker will help you to find the best lender with experience in new build mortgages.

Higher deposit

A new build mortgage deposit may be slightly higher – typically 15% for a new-build house and 25% for a new-build flat. However, you may be able to take advantage of a government scheme aimed at first time buyer new build mortgage applicants, and only have to put down a new build 5% deposit. Here at The Mortgage Broker our friendly team is on hand to offer help and advice.

Do I have to use the developers panel broker?

The developer you are looking to purchase your new build property from may prefer you to use a mortgage broker that they recommend, however this is not mandatory and you are able to use any qualified mortgage broker to apply for your mortgage.

Using the property developers reccomendeded mortgage broker is not madatory

What New Build incentives are there?

New build developers may offer financial incentives on the particular plot you are looking to purchase, for example, a builder gifted deposit, stamp duty paid for, option upgrades to the property such as flooring, cash back on completion, discounted purchase price, part exchange incentives, discounts for key workers, assisted home movers, estate agents fees paid

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Can You Reserve a New Build Without a Mortgage?

The short answer is yes, but it would make sense to get a Mortgage in Principle, not only so you know how much you can borrow, and to reduce the risk of your new build mortgage being declined, but also because the seller may need to see the paperwork for your mortgage in principle before you can secure your plot.

Summary: New Build Mortgages

  • New build mortgages are similar to standard mortgages but for customers who are buying a newly constructed, not yet lived in, house or flat. This can also include an extensively renovated property.
  • As a new build it is a blank slate, ready to move in, not needing any refurbishment work.
  • New build properties will be modern and energy efficient, in line with up to date building regulations.
  • If you are buying an off-plan property, you may have some input in the design.
  • Disadvantages can be that a new property may lack the character and features of an older house such as real fireplaces or stained glass windows.
  • Also because the property developer is trying to maximise profits, the houses may be smaller and crammed closer to neighbouring houses to optimise space.
  • There may also be ‘snagging’ issues and slightly lower build quality due to time and budget constraints on the builder.
  • Lenders may want a larger deposit.

For more information and advice regarding new build mortgages, contact us and we will help you to find the lender most suited to your specific requirements. Our of mortgage advisors is here for all your questions about new build mortgages.

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Quick questions with Craig Leigh, Mortgage Adviser at The Mortgage Broker, about getting a mortgage for New Build.

Craig Leigh breaks down the new build mortgage process.

Is it hard to get a mortgage for a new build home?

No, not if you know what you are doing. It’s not particularly hard to get a mortgage for new build. There are slightly fewer options available, but still plenty of choice and we work with lenders across the market to ensure we can find the right product. In terms of the process, it’s very similar to any other type of mortgage, just need to be fast, efficient and knowledgeable with regards to the best place to search and place.

Sometimes the timescales can differ due to the property not being built yet. Some lenders will have an extended offer period for new build property – so instead of your offer lasting the standard six months, some lenders extend it to 12 months to allow for that new build mortgage to stand.

As with a lot of mortgages, it comes down to criteria. There are many factors that can dictate the products available to any client. But for a standard client there will be very competitive deals out there for a new build mortgage. Any new build mortgage calculators out there, are indeed just standard mortgage calculators as there isn’t a difference in the products affordability.

How long does the new build application process take?

It depends if the property is built. If it’s not completed yet, it can be longer. In terms of the actual new build mortgage process, it’s a normal mortgage application. The property will be valued, whether it is built or off plan. That side of the process is exactly the same and won’t take any longer.  We will work on getting the mortgage lenders to extend the offer period.

What deposit do I need for a new build mortgage and how much can I borrow?

There’s a misconception with new builds that you need a larger deposit than standard mortgages, but there are lenders that will do new builds with a 5% deposit. This means they will lend up to 95% and you can absolutely get a 5% deposit mortgage on new build property

There are plenty of products for a 5% deposit, not necessarily using Help to Buy or another buying scheme. They are just standard mortgage products.

In terms of borrowing, that’s dictated by your income, outgoings and credit history. There’s no real difference in affordability when it comes to new builds  mortgages vs non-new build mortgages. The only difference is when it’s on a scheme. As an example, with any Help to Buy schemes, the income multiple is capped at 4.5 times income.

Are there other incentives available on new build homes? What is the Own New Rate Reducer Scheme?

Yes, The Mortgage Broker are an approved brokerage on the Own New Rate Reducer Scheme that launched in February 2024. The scheme was created by property finance company Own New and is aimed at making homeownership easier and cheaper than ever. Read more about the Rate Reducer scheme in the link just in this paragraph.

Sometimes developers will put incentives in place. That could be cash back from the developer; they might pay the stamp duty for the property; they could pay the legal fees or they could give you upgrades on the property.

Sometimes these incentives can be used towards the deposit. If there was cash back from the developer for the property, that be used towards the deposit which could mean a better mortgage product is available for you. These will be missed if you use a simply new build mortgage calculator, rather than speak to a new build mortgage broker who can ensure all schemes are searched.

What other schemes are available on new build properties?

Shared Ownership lets you buy a portion of a new build property. This means you only new to put in enough of a deposit for you to buy the portion of the property you are purchasing. However, for this, if you have a small deposit, we would always want to check 5% deposit mortgage.

Deposit Unlock is a scheme that is essentially the same thing, and was launched by the house-building industry to support people buying a new-build property with just 5% deposit put down.

What is the Deposit Unlock Scheme?

This is a new build mortgage scheme with home builders and lenders. There aren’t too many lenders on it but more and more are opening up to this and other New Build Mortgage Schemes. It’s for First Time Buyers and home movers. There are few restrictions in terms of the maximum loan available, but basically it allows you to buy with a 5% deposit on a new build property.

While you can get a 5% deposit with a standard mortgage, there’s less availability, so this is designed to increase the number of mortgages out there. It works directly with the home builders. This became popular as back in 2023 Help to Buy was ending.

What is shared ownership and how does it work?

Shared ownership is another great scheme. You can buy a percentage of a property and the rest is owned by the housing association. These are not always available for new build mortgages, but a lot of new developments offer these as a route to affordable housing. It helps people get on the property ladder.

I know plenty of people that have used the scheme to very good effect. With shared ownership you can ‘staircase’ up. If for example you buy a 50% share initially, after a few years you can buy more of the property using the equity, and repeat that all the way up to 100% where you’ll own the property outright.

The key is that you will pay rent to the housing association for the percentage you don’t own, alongside your mortgage payment.

What is a Joint Borrower Sole Proprietor mortgage?

This is commonly known as JBSP and sometimes Joint Borrower Sole Applicant. Again, it’s another great option and more lenders are doing this now.

It’s popular where a younger borrower or borrowers want to buy a property and their income’s just not enough to qualify for a mortgage. Maybe their parents own a property or have surplus income, in which case they can be added onto the mortgage to boost affordability. The parents won’t be on the deeds of the property, so it doesn’t cause any issues with stamp duty.

You can read more about joint Borrower Sole Proprietor HERE.

That’s one of the big selling points of this. It’s almost like a guarantor mortgage – it enables you to borrow more than you could through a standard mortgage.

It can also work the other way, where an older borrower uses their son or daughter’s income to help them buy a retirement home. A lot of the time within five to ten years the buyer can remove the guarantor from the mortgage and carry on independently. It’s a good way to help buyers get on the ladder.

What are the pros of new build mortgages?

One of the key pros with a new build is that there’s no chain – you don’t need to worry about other people pulling out – it’s almost all in your control. With a standard property there could be a chain of properties all waiting to buy and sell. Just one falling out can completely disrupt things and add time and stress.

Another pro to new builds is that they come with a warranty. A lot is covered so if things go wrong you can have repairs done without any cost to you.

Alongside that, new builds are low maintenance. You will have a brand new boiler. The electrics should be absolutely fine. Nothing should go wrong and you won’t have any maintenance costs for a long period of time.

Another good thing is you can potentially choose the finish on the property. If you’re buying off plan you can choose your kitchen, bathroom fittings, colours, carpets and things like that.

Are there any disadvantages with New?

In terms of the cons, if the property is not built you can’t physically see what you’re buying. You basically buy a show home. But you might view a five bedroom detached house with a lovely garden, but if you’re buying a two-bed terraced property that’s not really going to give you a fair reflection.

It’s also widely known that you potentially get less for your money in terms of size of rooms. Because of the way the housing market is these days, developers try to get as many houses on a site as possible. Sometimes gardens and rooms are not as big as with properties built in the 1960s and 1970s.

It’s not always the case, but potentially as the first people to move into the property, there could still be lots of building work going on around you. The roads might not be finished and there may be construction noise for a while.

How can the Mortgage Broker help me with a mortgage on a new build?

A broker helps by offering more options and making things simple. You could personally search a few lenders, but where should you start? As expert brokers, we know the lenders that are good for new builds, who offer the best affordability calculations, whose criteria will fit, and the best available products for each individual client.

It will save a lot of time and money. We will look holistically at your circumstances and the best product available for you. We also guide you through the process from start to finish. We can recommend solicitors, answer
any questions about buying the property, complete your application or get you on the Help to Buy scheme.

We’re here to advise and hold your hand all the way through. If there are any issues we can assist you through it all. We essentially take the stress away – it’s what we do day in, day out so we know how to deal with any situation.

If you have any questions, we’re always here to help – just give us a call.